FKIE_CVE-2026-47674

Vulnerability from fkie_nvd - Published: 2026-05-28 17:16 - Updated: 2026-10-14 20:10
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21.
References
security-advisories@github.comhttps://github.com/honojs/hono/security/advisories/GHSA-xrhx-7g5j-rcj5Vendor Advisory
Impacted products
Vendor Product Version
hono hono *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "hono",
          "vendor": "honojs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.12.21"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "797B2A25-4B24-46A9-8EF4-35F6F1214A7C",
              "versionEndExcluding": "4.12.21",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule \u2014 such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses \u2014 do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21."
    },
    {
      "lang": "es",
      "value": "Hono es un framework de aplicaci\u00f3n web que proporciona soporte para cualquier entorno de ejecuci\u00f3n de JavaScript. Anteriormente a la 4.12.21, el middleware de restricci\u00f3n de IP (hono/ip-restriction) compara las direcciones IP entrantes con las reglas de denegaci\u00f3n y permiso configuradas utilizando la igualdad de cadenas despu\u00e9s de una normalizaci\u00f3n parcial. Representaciones IPv6 no can\u00f3nicas de una direcci\u00f3n ya listada en una regla est\u00e1tica - como formas comprimidas, formas de ceros expl\u00edcitos o direcciones mapeadas a IPv4 en notaci\u00f3n hexadecimal - no coinciden con la entrada de regla normalizada, lo que provoca que la regla se omita silenciosamente. Esta vulnerabilidad se corrigi\u00f3 en la 4.12.21."
    }
  ],
  "id": "CVE-2026-47674",
  "lastModified": "2026-10-14T20:10:00.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47674",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-02T18:14:51.645201Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-28T17:16:32.383",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-xrhx-7g5j-rcj5"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-185"
        },
        {
          "lang": "en",
          "value": "CWE-1289"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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